公开(公告)号：US20230003940A1

公开(公告)日：2023-01-05

申请号：US17364588

申请日：2021-06-30

申请人： Yukinori IKEGAWA ,  Dayu ZHOU ,  Koji SHIMAZAWA ,  Yoshitaka SASAKI ,  Hiroyuki ITO ,  Yoji NOMURA

发明人： Yukinori IKEGAWA ,  Dayu ZHOU ,  Koji SHIMAZAWA ,  Yoshitaka SASAKI ,  Hiroyuki ITO ,  Yoji NOMURA

IPC分类号： G02B6/122 ,  G02B6/136 ,  G11B13/08 ,  G11B5/012

摘要： A waveguide includes a core and a cladding. The core has an inlet on which light is incident. The core includes a front portion and a rear portion located between the front portion and the inlet. The front portion and the rear portion each have a thickness that is a dimension in a first direction and a width that is a dimension in a second direction. The first direction is orthogonal to a propagation direction of the light. The second direction is orthogonal to the propagation direction of the light and the first direction. The thickness of the front portion decreases with increasing distance from the inlet.

公开(公告)号：US11410688B1

公开(公告)日：2022-08-09

申请号：US17347992

申请日：2021-06-15

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Yukinori Ikegawa ,  Weihao Xu

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Yukinori Ikegawa ,  Weihao Xu

IPC分类号： G11B11/105 ,  G11B5/127 ,  G11B7/1387 ,  G11B5/60 ,  G11B5/00 ,  G11B5/48

摘要： A thermally-assisted magnetic recording head includes a medium facing surface, a main pole, a waveguide, and a plasmon generator. A second metal layer of the plasmon generator includes a second front end facing the medium facing surface. A third metal layer of the plasmon generator includes a narrow portion located on the second metal layer. The narrow portion includes a front end face located in the medium facing surface and configured to generate near-field light from a surface plasmon, and a rear end opposite the front end face. The rear end is located farther from the medium facing surface than is the second front end.

公开(公告)号：US11049516B1

公开(公告)日：2021-06-29

申请号：US17069527

申请日：2020-10-13

申请人： Yukinori Ikegawa ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Yoji Nomura

发明人： Yukinori Ikegawa ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Yoji Nomura

IPC分类号： G11B5/39 ,  G11B5/48 ,  G11B5/187 ,  G11B5/00

摘要： A near-field light generator includes a plasmon generator including a plasmon exciting portion on which a surface plasmon is excited, and a near-field transducer including a front end face that generates near-field light from the surface plasmon. The near-field transducer is formed of a first metal material. The plasmon generator includes a first portion formed of the first metal material and a second portion formed of a second metal material. The first portion is in contact with the near-field transducer. The second portion includes at least part of the plasmon exciting portion.

公开(公告)号：US10803888B1

公开(公告)日：2020-10-13

申请号：US16574880

申请日：2019-09-18

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Tetsuya Roppongi ,  Atsushi Yamaguchi

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Tetsuya Roppongi ,  Atsushi Yamaguchi

IPC分类号： G11B5/115 ,  G11B5/39 ,  C23F4/04

摘要： A manufacturing method for a magnetic head includes the steps of: forming a main pole; forming a spin torque oscillator; and forming a trailing shield. The step of forming the spin torque oscillator includes: a step of forming a layered film; a step of forming an interposition layer; a step of forming a mask; a first etching step of etching a portion of the interposition layer using the mask; a second etching step of etching a portion of the layered film using the mask and the interposition layer as an etching mask; a step of removing the interposition layer and the mask; and a patterning step of patterning the layered film into the spin torque oscillator.

公开(公告)号：US10062402B1

公开(公告)日：2018-08-28

申请号：US15830818

申请日：2017-12-04

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Seiichiro Tomita ,  Masakazu Okada

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Seiichiro Tomita ,  Masakazu Okada

IPC分类号： G11B7/135 ,  G11B5/60 ,  G11B5/31 ,  H01P3/16 ,  G11B5/127 ,  H01P1/17 ,  G11B5/00

CPC分类号： G11B5/6088 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B2005/0021 ,  H01P1/174 ,  H01P3/16

摘要： A manufacturing method for a waveguide includes forming a core including a first layer and a second layer. The first layer has a top surface including a first region with which a bottom surface of the second layer is in contact, and a second region with which the bottom surface of the second layer is not in contact. Forming the core includes the steps of: forming an initial first layer; forming an etching stopper layer on the second region of the initial first layer; forming an initial second layer on the initial first layer and the etching stopper layer; etching the initial second layer and the initial first layer so as to make the initial first layer into the first layer; and etching the initial second layer until the etching stopper layer is exposed, so as to make the initial second layer into the second layer.

公开(公告)号：US09812156B2

公开(公告)日：2017-11-07

申请号：US14600460

申请日：2015-01-20

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hideo Mamiya ,  Hironori Araki ,  Seiichiro Tomita

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hideo Mamiya ,  Hironori Araki ,  Seiichiro Tomita

IPC分类号： G11B5/127 ,  G11B5/31 ,  G11B5/60 ,  G11B5/00 ,  G11B5/012

CPC分类号： G11B5/314 ,  G11B5/012 ,  G11B5/127 ,  G11B5/1272 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a main pole and a plasmon generator. The main pole has a front end face located in the medium facing surface. The plasmon generator has a near-field light generating surface located in the medium facing surface. The front end face of the main pole includes a first end face portion and a second end face portion. The second end face portion is located farther from the near-field light generating surface than is the first end face portion, and is greater than the first end face portion in width in the track width direction. The first end face portion and the near-field light generating surface are equal in width.

公开(公告)号：US09754614B1

公开(公告)日：2017-09-05

申请号：US15244556

申请日：2016-08-23

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Hideo Mamiya ,  Seiichiro Tomita

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Hideo Mamiya ,  Seiichiro Tomita

IPC分类号： G11B5/02 ,  G11B11/00 ,  G11B5/39 ,  G02B5/00 ,  G02B6/122 ,  G11B5/48 ,  G11B5/00

CPC分类号： G02B6/1226 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A plasmon generator includes: a first portion formed of a first metal material and including a front end face configured to generate near-field light; a second portion formed of a second metal material and located at a distance from the front end face; and a heat sink layer formed of a third metal material, located at a distance from the front end face and interposed between the first portion and the second portion. The second metal material is lower in Vickers hardness and higher in thermal conductivity than the first metal material. The third metal material has a thermal conductivity higher than that of each of the first and second metal materials, and has a Vickers hardness lower than that of the first metal material and higher than that of the second metal material.

公开(公告)号：US09542960B2

公开(公告)日：2017-01-10

申请号：US14720319

申请日：2015-05-22

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hideo Mamiya ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hideo Mamiya ,  Kenichi Takano

IPC分类号： G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00 ,  G11B11/105 ,  G11B5/60

CPC分类号： G11B5/315 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B11/10534 ,  G11B11/10536 ,  G11B11/10543 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a main pole, a plasmon generator, and first and second side shields. The main pole has a front end face located in the medium facing surface. The plasmon generator has a near-field light generating surface located in the medium facing surface. The front end face of the main pole includes a first end face portion, and a second end face portion greater in width than the first end face portion. The first and second side shields have first and second side shield end faces located on opposite sides of at least part of the near-field light generating surface and at least part of the first end face portion in the track width direction.

摘要翻译： 热辅助磁记录头包括主极，等离子体激元发生器以及第一和第二侧屏蔽。 主杆具有位于介质面对表面中的前端面。 等离子体发生器具有位于介质面对表面中的近场光产生表面。 主极的前端面包括第一端面部分和宽度大于第一端面部分的第二端面部分。 第一和第二侧面屏蔽具有位于近场光产生表面的至少一部分的相对侧上的第一和第二侧屏蔽端面以及轨道宽度方向上的第一端面部分的至少一部分。

公开(公告)号：US09495980B1

公开(公告)日：2016-11-15

申请号：US14886900

申请日：2015-10-19

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Hironori Araki ,  Kazumasa Yasuda ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Hironori Araki ,  Kazumasa Yasuda ,  Kenichi Takano

IPC分类号： G11B5/127 ,  G11B5/39

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3123

摘要： A magnetic head includes a coil, a main pole and a return path section. The return path section includes a yoke section, and a coupling section coupling the yoke section to the main pole. The coil includes a first coil portion surrounding at least part of an outer peripheral surface of the coupling section, and a second coil portion surrounding at least part of the entire perimeter of the main pole as viewed from the medium facing surface. The winding of the coil includes a common portion used in common to form part of the first coil portion and part of the second coil portion.

摘要翻译： 磁头包括线圈，主极和返回路径部分。 返回通路部分包括轭部，以及将轭部连接到主极的耦合部。 线圈包括围绕耦合部分的外周表面的至少一部分的第一线圈部分和围绕从介质面向表面观察的主极的整个周边的至少一部分的第二线圈部分。 线圈的绕组包括共同使用的共同部分，以形成第一线圈部分的一部分和第二线圈部分的一部分。

公开(公告)号：US20160307592A1

公开(公告)日：2016-10-20

申请号：US14691127

申请日：2015-04-20

申请人： Yoshitaka SASAKI ,  Hiroyuki ITO ,  Shigeki TANEMURA ,  Hideo MAMIYA ,  Hironori ARAKI ,  Seiichiro TOMITA

发明人： Yoshitaka SASAKI ,  Hiroyuki ITO ,  Shigeki TANEMURA ,  Hideo MAMIYA ,  Hironori ARAKI ,  Seiichiro TOMITA

IPC分类号： G11B7/1387 ,  G11B5/012 ,  G11B7/22

CPC分类号： G11B5/012 ,  G11B5/187 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

摘要： A plasmon generator includes a main body, and a front protrusion protruding from the main body. The front protrusion has a proximal portion which is a boundary with the main body, and a near-field light generating surface located in the medium facing surface of a magnetic head. The main body has a first inclined surface and a second inclined surface each facing toward the medium facing surface. The first inclined surface and the second inclined surface are at a distance from each other and aligned in the track width direction. The proximal portion of the front protrusion is located between the first inclined surface and the second inclined surface.

摘要翻译： 等离子体发生器包括主体和从主体突出的前突起。 前突起具有与主体边界的近侧部分和位于磁头的介质面向表面中的近场光产生表面。 主体具有第一倾斜表面和第二倾斜表面，每个倾斜表面面向介质相对表面。 第一倾斜面和第二倾斜面彼此间隔一定距离并且在轨道宽度方向上对齐。 前突起的近端部分位于第一倾斜表面和第二倾斜表面之间。